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DNA Structure and Replication

DNA Structure and Replication
DNA with a G-C content of 50% will melt at approximately

60°C
70 °C
90 °C
100 °C

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DNA Structure and Replication
The chromosomal DNA complexes with

five types of histone as H1, H2A, H2B, H3 and H4
three types of histone as H1, H2A and H4
two types of histone as H1 and H4
four types of histone as H1, H2A, H3 and H4

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DNA Structure and Replication
Which of the following in DNA replication and transcription are common?

synthesis in the 5'-3' direction
utilization the same enzyme
incorporation of deoxynucleotides
None of these

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DNA Structure and Replication
For the DNA replication in eukaryotes, the cell cycle consists of

S, G2 and M phases
G1, G2 and M phases
G2 and M phases
G1,S, G2 and M phases

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DNA Structure and Replication
DNA gyrase in E. coli

can be inhibited with antibiotics
adds positive supercoils to chromosomal DNA
is required only at the oriC site
performs the same function as helicase in eukaryotes

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DNA Structure and Replication
An important difference between eukaryotic and prokaryotic DNA replication is

eukaryotic DNA polymerases are faster
multiple origins of replication in eukaryotes
more DNA polymerases are found in eukaryotes
RNA primers are not required in eukaryotes

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